made local variable names case-insensitive

components/compiler/lineparser.cpp

@@ -49,8 +49,10 @@ namespace Compiler
                 scanner.scan (skip);
                 return false;
             }
+         
+            std::string name2 = toLower (name);
             
-            char type = mLocals.getType (name);
+            char type = mLocals.getType (name2);
             
             if (type!=' ')
             {
@@ -61,7 +63,7 @@ namespace Compiler
             }
             
             mLocals.declare (mState==ShortState ? 's' : (mState==LongState ? 'l' : 'f'),
-                name);
+                name2);
             
             mState = EndState;
             return true;
@@ -70,10 +72,11 @@ namespace Compiler
         if (mState==SetState)
         {
             // local variable?
-            char type = mLocals.getType (name);        
+            std::string name2 = toLower (name);
+            char type = mLocals.getType (name2);
             if (type!=' ')
             {
-                mName = name;
+                mName = name2;
                 mState = SetLocalVarState;
                 return true;
             }

components/compiler/parser.cpp

@@ -1,6 +1,9 @@
 
 #include "parser.hpp"
 
+#include <cctype>
+#include <algorithm>
+
 #include "errorhandler.hpp"
 #include "exception.hpp"
 
@@ -50,6 +53,16 @@ namespace Compiler
         return mContext;
     }
 
+    std::string Parser::toLower (const std::string& name)
+    {
+        std::string lowerCase;
+        
+        std::transform (name.begin(), name.end(), std::back_inserter (lowerCase),
+            (int(*)(int)) std::tolower);
+            
+        return lowerCase;
+    }
+
     Parser::Parser (ErrorHandler& errorHandler, Context& context)
     : mErrorHandler (errorHandler), mContext (context)
     {}

components/compiler/parser.hpp

@@ -21,8 +21,6 @@ namespace Compiler
 
         protected:
 
-        // mutators
-
             void reportSeriousError (const std::string& message, const TokenLoc& loc);
             ///< Report the error and throw a exception.
 
@@ -41,6 +39,8 @@ namespace Compiler
             Context& getContext();
             ///< Return context
 
+            static std::string toLower (const std::string& name);
+
         public:
 
             Parser (ErrorHandler& errorHandler, Context& context);